JP6607141B2 - Terminal - Google Patents

Description

  The technique disclosed by this specification is related with a terminal.

  Conventionally, as a terminal having a box part into which a mating terminal is inserted, an elastic deflecting part arranged inside the box part, and an opposing contact part arranged on the opposite side of the elastic deflecting part, for example, JP-A-2015-204186. A terminal described in Japanese Patent Publication (Patent Document 1) is known. The elastic bending portion is provided with an indent portion that protrudes toward the opposing contact portion, and the elastic protrusion portion side of the opposing contact portion has a forward protruding portion upstream from the position of the indent portion in the insertion direction of the tab portion of the mating terminal. And a rear protrusion is provided downstream from the position of the indent. A recessed surface is formed between the front protruding portion and the rear protruding portion on the surface of the opposing contact portion on the elastic deflection portion side. The front protrusions and the rear protrusions arranged on both the front and rear sides of the recessed surface are contact portions that can make line contact with the mating terminal. According to this terminal, when the mating terminal receives a pressing force from the elastic bending portion during insertion with the mating terminal, the mating terminal is inserted along the curved surface of the concave surface while escaping into the space on the concave surface side. Therefore, there is an effect that the operation force is reduced during the insertion process.

JP-A-2015-204186

  Ideally, the wobbling of the mating terminal can be eliminated when the front projecting portion and the rear projecting portion are in line contact with the mating terminal. In practice, however, the heights of the front protrusion and the rear protrusion vary to some extent, so that each protrusion and the mating terminal come into contact in a point contact state. Moreover, since the contact position and the number of contacts are not constant, the wobbling of the counterpart terminal may not be eliminated depending on the contact position and the number of contacts.

  The terminal disclosed by this specification has a 1st wall part and the 2nd wall part arrange | positioned facing the said 1st wall part, and the main-body part which makes a square cylinder shape as a whole, A first contact extending from the front or rear edge of the one wall portion into the main body and projecting toward the second wall, the first contact being separated from the second wall; An elastic contact piece that is displaceable in a direction, and three protruding portions that are provided to protrude from the second wall portion toward the first wall portion and include a front protruding portion and a rear protruding portion. The front protrusion includes a front contact disposed on the front side of the first contact, and a front bead having an inclined surface that approaches the second wall portion side toward the rear from the front contact. And the rear protrusion includes a rear contact disposed rearward of the first contact and a front side of the rear contact. It is constituted by a side bead after having slope closer to the second wall portion buy.

  In this way, when the mating terminal is fitted in the main body, the mating terminal is sandwiched between the elastic contact piece of the first wall portion and the three protruding portions of the second wall portion. At this time, since the mating terminal comes into a three-point contact with the three protrusions by the force received from the elastic contact piece, the contact position and the number of contacts are constant.

  Also, when inserting the mating terminal into the main body, the leading end of the mating terminal is guided rearward by the front and rear beads, so that the operating force is high when the leading end of the mating terminal hits the rear contact. Never become.

The terminal disclosed by this specification is good also as the following structures.
The front bead and the rear bead may both extend in the front-rear direction, and the rear end of the front bead may be located behind the front end of the rear bead.
According to such a configuration, since the tip of the mating terminal moves from the front bead to the rear bead, the mating terminal can be smoothly inserted.

Two front protrusions may be provided, and one rear protrusion may be provided.
According to such a configuration, since the mating terminal is supported by the two front beads immediately after the mating terminal is inserted into the main body, the wobbling of the mating terminal can be eliminated from the initial insertion.

  According to the terminal disclosed in the present specification, the contact position and the number of contacts with the mating terminal can be made constant, and it is possible to avoid an increase in operating force due to the tip of the mating terminal hitting the rear contact. .

Terminal perspective view Terminal plan Terminal side view The perspective view which notched and showed a part of FIG. Front view of terminal BB sectional view in FIG. Sectional drawing which showed the state by which the other party terminal was inserted in the main-body part from the state of FIG. AA line sectional view in FIG. Sectional drawing which showed the state by which the other party terminal was inserted in the main-body part from the state of FIG.

<Embodiment>
Embodiments will be described with reference to FIGS. 1 to 9. As illustrated in FIG. 1, the terminal 10 according to the present embodiment includes a terminal connection portion 20 connected to the mating terminal 60 and a wire connection portion 50 provided continuously behind the terminal connection portion 20. ing. The terminal 10 is a female terminal, and a mating terminal 60 that is a male terminal having a flat tab shape can be fitted into the terminal connecting portion 20 and can be connected. In the following description, the fitting direction of the terminal 10 and the mating terminal 60 is the front-rear direction, the side to which the mating terminal 60 is connected is the front side, and the vertical and horizontal directions will be described with reference to FIG.

  The electric wire connection portion 50 has a flat plate shape, and a core wire of an electric wire (not shown) can be welded to the upper surface of the electric wire connection portion 50 by welding means such as resistance welding. In the present embodiment, the core wire of the electric wire is connected to the electric wire connecting portion 50 by welding, but the electric wire core wire may be connected to the electric wire connecting portion by crimping.

  The terminal connection portion 20 has a main body portion 21 that has a rectangular tube shape as a whole. The main body 21 includes a bottom wall 22, a left side wall 23 configured to rise upward from the left side edge of the bottom wall 22, a right side wall 24 configured to rise upward from the right side edge of the bottom wall 22, and the left side wall 23 A ceiling wall 25 extending rightward from the upper edge and an opening preventing wall 26 extending leftward from the upper edge of the right wall 24 along the upper surface of the ceiling wall 25 are configured. In other words, the left side wall 23 connects the left side edge of the bottom wall 22 and the left side edge of the ceiling wall 25, and the right side wall 24 connects the right side edge of the bottom wall 22 and the right side edge of the ceiling wall 25. .

  The opening prevention wall 26 prevents the ceiling wall 25 from opening upward by pressing the right end of the ceiling wall 25 from above. In addition, a locking hole 27 is provided at the corner of the opening prevention wall 26 and the right side wall 24. A locking piece 28 provided at the right end of the ceiling wall 25 is fitted in the locking hole 27. Since the locking piece 28 is locked to the hole edge of the locking hole 27, the ceiling wall 25 is prevented from moving in the front-rear direction.

  As shown in FIG. 5, the ceiling wall 25 is located above the bottom wall 22, and the ceiling wall 25 and the bottom wall 22 are arranged in parallel so as to face each other. A part of the ceiling wall 25 protrudes downward, and this protruding portion is an excessive deflection preventing portion 29. The excessive deflection preventing portion 29 serves to prevent the elastic contact piece 30 described below from being excessively bent toward the ceiling wall 25 and plastically deforming.

  As shown in FIG. 6, the elastic contact piece 30 is folded back into the main body portion 21 from the rear edge of the ceiling wall 25 and extends forward. The elastic contact piece 30 has a substantially mountain shape as a whole, and a first contact 31 is provided on the lower end portion of the elastic contact piece 30 so as to protrude downward. The first contact 31 is located near the front end of the elastic contact piece 30 and is located slightly in front of the above-described excessive deflection preventing portion 29. The elastic contact piece 30 can be displaced in a direction in which the first contact 31 is separated from the bottom wall 22 by the first contact 31 riding on the upper surface of the counterpart terminal 60 when the counterpart terminal 60 is inserted into the main body 21. It is said that.

  As shown in FIG. 5, both the elastic contact piece 30 and the excessive deflection preventing portion 29 are formed over almost the entire width of the ceiling wall 25. For this reason, when the elastic contact piece 30 contacts the excessive deflection preventing portion 29, the elastic contact piece 30 contacts the excessive deflection preventing portion 29 over the entire width. Thereby, for example, when the mating terminal 60 enters the main body portion 21 in an oblique direction, the elastic contact piece 30 can be prevented from being pushed upward and plastically deformed. At this time, since the upper surface of the elastic contact piece 30 is in contact with the lower surface of the excessive deflection preventing portion 29 in a surface contact state, the force can be dispersed over a wide range even when a strong force is applied. Can be prevented.

  As shown in FIG. 5, the bottom wall 22 is provided with three projecting portions projecting upward, and the projecting portion located in the middle is the rear projecting portion 40 </ b> R, and the projecting portions are located on the left and right sides. The portion is a front protrusion 40F. As shown in FIG. 6, the front protrusion 40F includes a front contact 41F disposed on the front side of the first contact 31, and a front bead 42F having a slope that approaches the bottom wall 22 side toward the rear from the front contact 41F. The rear protrusion 40R includes a rear contact 41R disposed on the rear side of the first contact 31, and a slope approaching the bottom wall 22 side toward the front from the rear contact 41R. And a rear bead 42R. The left front protrusion 40F is disposed closer to the left wall 23, and the right front protrusion 40F is disposed closer to the right wall 24. Therefore, a sufficient separation distance is secured between the pair of left and right front contacts 41F and the first contact 31 located on the front side, which is necessary for the mating terminal 60 to rotate around the first contact 31. It has been devised to increase the moment of rotation even a little.

  As shown in FIG. 4, the front contact point 41 </ b> F has a shape that leaves the front part of the hemisphere. Similarly, the rear contact 41R has a shape that leaves the rear portion of the hemisphere.

  Both the front bead 42F and the rear bead 42R are configured to extend in the front-rear direction, and are arranged in parallel and independently of each other, and the rear end of the front bead 42F is located behind the front end of the rear bead 42R. . More specifically, the rear end of the front bead 42F is in the same position as the rear contact 41R in the front-rear direction, and the front end of the rear bead 42R is in the same position as the front contact 41F in the front-rear direction.

  As shown in FIG. 6, the front bead 42 </ b> F and the rear bead 42 </ b> R are configured to intersect in a side view, and when the tip of the mating terminal 60 is guided rearward along the front bead 42 </ b> F, the bottom wall 22. Since it is transferred to the rear bead 42R above and guided rearward along the rear bead 42R, the mating terminal 60 can be inserted smoothly. Therefore, the insertion force is not increased by the tip of the mating terminal 60 falling into the bottom wall 22 and hitting the rear contact 41R.

  As shown in FIG. 6, the region FR1 occupying the first contact 31 in the front-rear direction is located within a region FR2 from the front end of the front protrusion 40F to the rear end of the rear protrusion 40R. . As shown in FIG. 7, when the mating terminal 60 is pushed downward by the first contact 31 riding on the upper surface of the mating terminal 60 when the mating terminal 60 is inserted into the main body portion 21, This means that the terminal 60 is supported by two contact points 41F and 41R at the front and rear. In this way, even if the front end of the mating terminal 60 is tilted upward or downward, the wobbling of the mating terminal 60 can be eliminated because it is corrected to the original horizontal attitude.

  As shown in FIG. 8, the region LR1 occupying the first contact 31 in the left-right direction is within the range of the region LR2 from the left end of the front projection 40F located on the left side to the right end of the front projection 40F located on the right side. It is supposed to be located in As shown in FIG. 9, when the mating terminal 60 is pushed down when the mating terminal 60 is inserted into the main body 21 and the first contact 31 rides on the top surface of the mating terminal 60. This means that the terminal 60 is supported by two front contact points 41F on the left and right. In this way, even if the left end of the mating terminal 60 is tilted upward or downward (or the right end of the mating terminal 60 is tilted upward or downward), the original horizontal posture is corrected. The wobbling of the mating terminal 60 can be eliminated.

  In this way, when the mating terminal 60 is pushed into the bottom wall 22 by the force received from the first contact 31, the mating terminal 60 is necessarily supported by the three contacts 41F and 41R. For this reason, the mating terminal 60 is always elastically sandwiched between the first contact 31 of the elastic contact piece 30 and the three contacts 41F and 41R of the bottom wall 22 to clarify the contact position. be able to.

  As described above, in the present embodiment, when the mating terminal 60 is fitted in the main body portion 21, the elastic contact piece 30 of the first wall portion (ceiling wall 25) and the second wall portion (bottom wall 22) 3 The mating terminal 60 is sandwiched between the two protrusions 40F, 40R. At this time, since the mating terminal 60 comes into contact with the three protrusions 40F and 40R by the force received from the elastic contact piece 30, the contact position and the number of contacts are constant.

  Further, when the mating terminal 60 is inserted into the main body 21, the tip of the mating terminal 60 is guided rearward by the front bead 42F and the rear bead 42R, so the tip of the mating terminal 60 is the rear contact 41R. The operating force does not increase by hitting the

Both the front bead 42F and the rear bead 42R may be configured to extend in the front-rear direction, and the rear end of the front bead 42F may be located behind the front end of the rear bead 42R.
According to such a configuration, since the tip of the mating terminal 60 is transferred from the front bead 42F to the rear bead 42R, the mating terminal 60 can be smoothly inserted.

Two front protrusions 40F may be provided, and one rear protrusion 40R may be provided.
According to such a configuration, immediately after the mating terminal 60 is inserted into the main body portion 21, the mating terminal 60 is supported by the two front beads 42F. Therefore, the wobbling of the mating terminal 60 can be eliminated from the initial insertion.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.
(1) In the above-described embodiment, the rectangular cylindrical main body portion 21 including four wall portions is illustrated, but other forms may be used as long as the main body portion includes the first wall portion and the second wall portion. It is good also as a rectangular tube-shaped main-body part which consists of two wall parts.

  (2) Although two front contacts 41F and one rear contact 41R are disposed on the bottom wall 22 in the above embodiment, one front contact and two rear contacts are disposed on the bottom wall 22. May be.

  (3) In the above embodiment, although the elastic contact piece 30 is provided in the form of folding back from the rear edge of the ceiling wall 25 into the main body 21, the elastic contact is performed in the form of folding back from the front edge of the ceiling wall 25 into the main body 21. A piece may be provided, or an elastic contact piece may be provided on the bottom wall 22 side.

  (4) Although the beads 42F and 42R are provided independently in the above embodiment, for example, the front bead 42F and the rear bead 42R are integrally provided in the form of connecting the front contact 41F and the rear contact 41R. May be.

10 ... terminal 21 ... main body 22 ... bottom wall (second wall)
23 ... Left side wall (third wall)
24 ... right side wall (fourth wall)
25 ... Ceiling wall (first wall)
DESCRIPTION OF SYMBOLS 30 ... Elastic contact piece 31 ... 1st contact 40F ... Front side protrusion part 40R ... Rear side protrusion part 41F ... Front side contact point 41R ... Rear side contact point 42F ... Front side bead 42R ... Rear side bead 60 ... Mating terminal

Claims (3)

A main body portion having a first wall portion and a second wall portion disposed opposite to the first wall portion, and having a rectangular tube shape as a whole;
A first contact extending from the front or rear edge of the first wall into the main body and projecting toward the second wall; the first contact from the second wall; An elastic contact piece that is displaceable in a separating direction;
Three projecting portions provided to project from the second wall portion to the first wall portion side, including a front projecting portion and a rear projecting portion,
The front protrusion is configured to include a front contact disposed on the front side of the first contact, and a front bead having an inclined surface that approaches the second wall portion side toward the rear from the front contact,
The rear protrusion includes a rear contact disposed on the rear side of the first contact, and a rear bead having an inclined surface that approaches the second wall portion side toward the front from the rear contact. A terminal that is configured with.   2. The terminal according to claim 1, wherein each of the front bead and the rear bead extends in a front-rear direction, and a rear end of the front bead is located behind a front end of the rear bead.   The terminal according to claim 1, wherein two front protrusions are provided, and one rear protrusion is provided.

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